Device for pumping out boats



Sept. .13, 1932, c. ot H. voN KHLER 1,877,210

DEVICE FOR BUMPING OUT BOATS Filed uy '6, 1931 Patented Sept. 13,' 1932 UNITED STATES PATENr'oFFIgE CARL GUSTAF o'rTo HJALMAR von knnen, on smocxnonmjswnnE-N f DEVICE non PUMPING our BOATS Y .1` M

Y Application filed May 6, 1931, Serial No. 535,370, and in Sweden May 6, 1930.

The present invention relates toa device for pumping out water from-boats, which device is automatically operative when theboat is moored. The invention is based upon .the

lfact that, even in very quiet harbors, there is produced by the movement of the boat with relation to the water are utilized to operate a pumping device. Y

The invention comprises Aessentially a pump, the pumping member of which is connected with a cable which can be connected Awith a mooring post so as to allow the pumping member to be acted upon by said cable when the moored boat is oscillated by the action of waves or wind. Y

In the accompanying drawing, y

Fig. 1 is a partly diagrammatic view of a boat provided with a pumping device embodying the features of the present invention;

Fig. 2 is a plan view thereof;

Fig. 3 is a side view showing on a larger scale one embodiment of the pumping device;

Fig. 4 is a side view of a modified form of the pumping device;

Fig. 5 is a central longitudinal sectional view taken through Fig. 4.

Referring to Fig. l, the boat l is moored,

at stem and stern, to the two mooring posts 2 and 3 respectively by means of the cables 4 and 5 respectively in the usual manner. `In addition, there is a cable 25 having one end attached to the post 2, and preferably including a resilient member 26, for instance a spring, the other end of the cable 25 being connected with the pumpingdevice 6 (sec Figs. 1 and 3). When the boat is oscillatedby the action of waves, wind or the like, said device 6 is caused toact by the varying tensile stresses in the cable 25 so as to cause the water contained in the boat to be pumped out. Y It .should be pointed out that the chain cable 4:

may be dispensed with, if desired, and the cable 25 take its place as a mooring cable.

thereby to deliver the In the embodiment shown in` Fig. `3 the cable 25 has one end attached to oneend of a double-armed lever 7 pivotally mountedin a bracket 8. The other end of the lever 7 carries a roller 9, which, when the lever is swung on its pivot,.acts uponav collapsible elastic bulb 10, which communicates at one end with a suction pipe 1l provided at its lower end with a strainer 14C, the bulb communicating atits opposite end with one end of a delivery pipe 12, which carries at its opposite end a flanged connecting member 13,

by means of which it may be secured in alinei ment with an opening inthe side of the boat pumpedwater outside of the boat.

In the embodiment shown in Figs. 4 and 5 the device consists of a pump cylinder 15 made preferably of a stainless metal.V Disposed for reciprocation in the cylinder 15 is a piston 16, the rod 18 of which is connected with the cable 25 whereby thepiston mayy be displaced in one direction by the tensile forces arising in the cable. The piston is movedV in the opposite direction by the influence of a spring 17; To prevent the piston rod 18 from bending when the tensile forces in the cable 25 are not in linewithrthe direction of movement of the piston. rod a guide 19 for the cable 25 is provided in axial` alinement with the piston rod. 21 and 22 are two balls serving as check valves and'lo- 7 cated respectively in the suction and delivery pipes 11 and 12.

It may be pointed out that the embodiments described above are illustrative only, and that the construction of the device may be `consi'derably modified without departing from the scope of the invention as set forth in the appended claim.-

I-Iavin-g now particularly described the nature of my invention and the manner of its operationwhat I claim is:

AV device for pumping water from boats,

within the boat, a suction pipe and a delivery pipe communicating with said bulb, each comprising a collapsible elastic bulb disposed "955 of said pipes having a check valve, a doublef armed lever mounted for pivotal movement f on said boat, a flexible `member secured at i one end to onearm of said lever and atits opposite end to a Xed point outside of the boat, the other arm of said lever being dis-v posed in Contact with said bulb, whereby the vibrations of said fexble member will cause the lever to swing on its pvot thereby to produc alternate collapse and expansion of said bul e f In testmny/Whereof I have signed my name to this specification. 

